There is no place you can get cheap shipping since the PACT act kicked in. The only way to do it is to make a large order to make the shipping cost less of an issue. I haven't ordered since the PACT act but when I do it's going to be a large order in the realm of at least 4 or 5 rolls, perhaps more. Shipping should not much more then a smaller order.
Another way... though I'm a bit loath to mention as I haven't tried them yet and you only get 15 portions per can is the new Camel Winterchill.